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| Chapter | 2005 | 2006 | 2007 | 2008 |
| Iron and steel | $218,098 | $93,070 | $16,519 | $24,888 |
| Articles of iron or steel | $824,855 | $983,226 | $1,481,425 | $988,259 |
| Copper and articles thereof | $629,643 | $1,192,502 | $1,398,879 | $1,562,868 |
| Nickel and articles thereof | $3,684 | | | |
| Aluminum and articles thereof | $431,992 | $92,739 | $192,212 | $290,035 |
| Lead and articles thereof | $559 | $7,408 | $26,087 | $6,113 |
| Zinc and articles thereof | $28,279 | | | $756 |
| Tin and articles thereof | $250 | | | |
| Tools, implements, cutlery, spoons and forks, of base metal | $121,417 | $560,740 | $731,141 | $210,479 |
| Miscellaneous articles of base metal | $41,372 | $2,343,311 | $59,437 | $41,917 |
| Total | $2,300,149 | $5,272,996 | $3,905,700 | $3,125,315 |
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